Yes, artificial lighting can be used for Plumeria seed germination, especially in regions with insufficient natural light or during the winter months. Full-spectrum grow lights or fluorescent lights can provide the necessary light spectrum for seed germination. Position the lights a few inches above the seed tray to mimic natural sunlight and ensure even light distribution. Maintain a light cycle of 12-16 hours per day to support seedling growth. Supplemental lighting is especially beneficial for providing consistent and adequate light levels during the early stages of germination.